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authorOlof Johansson <olof@lixom.net>2014-05-19 21:59:55 -0700
committerOlof Johansson <olof@lixom.net>2014-05-19 21:59:55 -0700
commit5df22a6148d7f073513a61eb306a98654c5a6fe8 (patch)
treed80a90222f36b303eea4f6334a3cbe6e35baeecd /drivers/irqchip
parentc15c1199b0031f2dcc3437e9998e9abe99e2609c (diff)
parent9f0affcf3e21fc56d8bce625bb3d5800b7a7d284 (diff)
Merge tag 'mvebu-soc-3.16' of git://git.infradead.org/linux-mvebu into next/soc
Merge "ARM: mvebu: SoC changes for v3.16" from Jason Cooper: mvebu SoC changes for v3.16 - Armada 375/38x coherency support - Armada 375/38x SMP support - mvebu PMSU and CPU reset support - Armada 370/XP cpuidle support - kirkwood remove platform init of audio device - small fixes and cleanup for new SoC (375/38x) Note: - due to complex deps, cpuidle changes Acked by appropriate maintainer for going though arm-soc tree. * tag 'mvebu-soc-3.16' of git://git.infradead.org/linux-mvebu: (46 commits) ARM: mvebu: Fix pmsu compilation when ARMv6 is selected ARM: mvebu: conditionalize Armada 375 coherency workaround ARM: mvebu: conditionalize Armada 375 SMP workaround ARM: mvebu: add Armada 375 A0 revision definition ARM: mvebu: initialize mvebu-soc-id earlier ARM: mvebu: fix thermal quirk SoC revision check ARM: Kirkwood: t5325: Remove platform device to instantiate audio ARM: Kirkwood: Remove platform driver for codec ARM: mvebu: Add thermal quirk for the Armada 375 DB board ARM: mvebu: Select HAVE_ARM_TWD only if SMP is enabled ARM: mvebu: fix the name of the parameter used in mvebu_get_soc_id ARM: mvebu: remove unnecessary ifdef around l2x0_of_init ARM: mvebu: register the cpuidle driver for the Armada XP SoCs cpuidle: mvebu: Add initial CPU idle support for Armada 370/XP SoC ARM: mvebu: Register notifier callback for the cpuidle transition ARM: mvebu: refine which files are build in mach-mvebu ARM: mvebu: Add the PMSU related part of the cpu idle functions ARM: mvebu: Allow to power down L2 cache controller in idle mode ARM: mvebu: Low level function to disable HW coherency support ARM: mvebu: Split low level functions to manipulate HW coherency ... Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-armada-370-xp.c24
-rw-r--r--drivers/irqchip/irq-orion.c4
2 files changed, 24 insertions, 4 deletions
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 3899ba7821c5..c887e6eebc41 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -19,6 +19,7 @@
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/irqchip/chained_irq.h>
+#include <linux/cpu.h>
#include <linux/io.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
@@ -310,7 +311,8 @@ static int armada_370_xp_mpic_irq_map(struct irq_domain *h,
}
#ifdef CONFIG_SMP
-void armada_mpic_send_doorbell(const struct cpumask *mask, unsigned int irq)
+static void armada_mpic_send_doorbell(const struct cpumask *mask,
+ unsigned int irq)
{
int cpu;
unsigned long map = 0;
@@ -330,7 +332,7 @@ void armada_mpic_send_doorbell(const struct cpumask *mask, unsigned int irq)
ARMADA_370_XP_SW_TRIG_INT_OFFS);
}
-void armada_xp_mpic_smp_cpu_init(void)
+static void armada_xp_mpic_smp_cpu_init(void)
{
/* Clear pending IPIs */
writel(0, per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_CAUSE_OFFS);
@@ -342,6 +344,20 @@ void armada_xp_mpic_smp_cpu_init(void)
/* Unmask IPI interrupt */
writel(0, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK_OFFS);
}
+
+static int armada_xp_mpic_secondary_init(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
+ armada_xp_mpic_smp_cpu_init();
+ return NOTIFY_OK;
+}
+
+static struct notifier_block armada_370_xp_mpic_cpu_notifier = {
+ .notifier_call = armada_xp_mpic_secondary_init,
+ .priority = 100,
+};
+
#endif /* CONFIG_SMP */
static struct irq_domain_ops armada_370_xp_mpic_irq_ops = {
@@ -497,6 +513,10 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
if (parent_irq <= 0) {
irq_set_default_host(armada_370_xp_mpic_domain);
set_handle_irq(armada_370_xp_handle_irq);
+#ifdef CONFIG_SMP
+ set_smp_cross_call(armada_mpic_send_doorbell);
+ register_cpu_notifier(&armada_370_xp_mpic_cpu_notifier);
+#endif
} else {
irq_set_chained_handler(parent_irq,
armada_370_xp_mpic_handle_cascade_irq);
diff --git a/drivers/irqchip/irq-orion.c b/drivers/irqchip/irq-orion.c
index e25f246cd2fb..34d18b48bb78 100644
--- a/drivers/irqchip/irq-orion.c
+++ b/drivers/irqchip/irq-orion.c
@@ -42,7 +42,7 @@ __exception_irq_entry orion_handle_irq(struct pt_regs *regs)
u32 stat = readl_relaxed(gc->reg_base + ORION_IRQ_CAUSE) &
gc->mask_cache;
while (stat) {
- u32 hwirq = ffs(stat) - 1;
+ u32 hwirq = __fls(stat);
u32 irq = irq_find_mapping(orion_irq_domain,
gc->irq_base + hwirq);
handle_IRQ(irq, regs);
@@ -117,7 +117,7 @@ static void orion_bridge_irq_handler(unsigned int irq, struct irq_desc *desc)
gc->mask_cache;
while (stat) {
- u32 hwirq = ffs(stat) - 1;
+ u32 hwirq = __fls(stat);
generic_handle_irq(irq_find_mapping(d, gc->irq_base + hwirq));
stat &= ~(1 << hwirq);